title: Steroid-1-dehydrogenases in nocardioform bacteria studied by electrophoresis and immuno blotting techniques.
abstract: Fifteen noncardioform bacteria strains, capable of transforming steroid compounds were investigated with regard to their range of inducible steroid-1-dehydrogenase (St1DH)1 activities. The St1DHs of these bacteria were compared due to their immuno reactivity in Western blot experiments with a rabbit antiserum raised against the purified St1DH of Rhodococcus rhodochrous 7030. Four strains exhibited a strong immuno reactivity, irrespective of differences in the electrophoretic mobility of the enzymes. Five strains revealed significantly diminished reactivities, and in five strains with a very low St1DH content, no reactivity was found. One strain, designated as Nocardiaspec. 7151, exhibited a high, inducible St1DH activity, but no immunoreaction was found. The absence of immuno reactivity is discussed in connection with the considerably diminished electrophoretic mobility of this enzyme.
authors.affiliation: Akademie der Wissenschaften der DDR, Zentralinstitut für Mikrobiologie und experimentelle Therapie, Jena.
authors.forename: G
authors.initials: G
authors.lastname: Kaufmann
authors.forename: G
authors.initials: G
authors.lastname: Schumann
authors.forename: L
authors.initials: L
authors.lastname: Wollweber
authors.forename: E
authors.initials: E
authors.lastname: Hüller
authors.forename: P
authors.initials: P
authors.lastname: Atrat
mesh_terms: D015153:Blotting, Western; D008970:Molecular Weight; D009615:Nocardia / Q000201:enzymology*; D010088:Oxidoreductases / Q000378:metabolism*; D012240:Rhodococcus / Q000201:enzymology*
chemical_list: D010088:Oxidoreductases; C022656:3-oxosteroid delta(1) dehydrogenase